Comb



FIG. 1 is a front elevation view of a comb showing my new design; the rear elevation view being a mirror image;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof; and,

FIG. 5 is a right side elevation view thereof. 

The ornamental design for a comb, as shown and described. 